Peanut heavy metal contamination control method
A pollution control and heavy metal technology, applied in the restoration of polluted soil, etc., can solve the problems of reducing the bioavailability and content of heavy metal elements in the soil, reducing the content of heavy metal elements in peanut kernels, etc., to eliminate the risk of heavy metal pollution and eliminate continuous cropping obstacles , Guarantee the effect of output and quality status
Inactive Publication Date: 2019-02-01
SHANDONG PEANUT RES INST
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Problems solved by technology
[0004] Aiming at the above-mentioned problem that traditional single chemical passivation or single bioremediation is difficult to continuously control the content of heavy metal elements in peanut seeds, the present invention aims to provide a method for controlling heavy metal pollution in peanuts, which is controlled by chemical fixation during peanut planting and phytoremediation after peanut harvest technology, significantly reducing the bioavailability and content of heavy metal elements (cadmium, chromium, lead, copper, zinc) in the soil, so that the content of heavy metal elements in peanut kernels is greatly reduced
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Embodiment 1～2
[0012] Examples 1-2 Peanut passivation-removal two-way heavy metal pollution control method experiment
[0013] Experimental location:
[0014] The test was carried out on acid brown soil in Qingdao City, Shandong Province. The basic properties of the soil were: pH 5.8, organic matter 6.3g / kg, total nitrogen (N) 0.66g / kg, total phosphorus (P) 0.44g / kg, total potassium (K ) 17.1g / kg, full lead (Pb) 19,9mg / kg, cadmium (Cd) 0.17mg / kg, chromium (Cr) 32.0mg / kg. The experimental field was divided into four parts, two of which were randomly selected to adopt the passivation-removal two-way heavy metal pollution control method, and the other two were adopted to the conventional passivation method.
[0015] Field experiment:
[0016] On May 4, 2016, the experimental group 1 used lime as a chemical fixative at 40 kg per hectare; the experimental group 2 used fly ash as a chemical fixative at 40 kg per hectare to inhibit the activity of heavy metal elements in the soil and reduce the ...
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The invention relates to a peanut heavy metal contamination control method, and belongs to the technical field of heavy metal contamination control. The method is a passivating-removing bi-directionalheavy metal contamination control method and comprises the following steps that (1), before in-season peanuts are planted, a chemical fixing agent is applied, the activity of soil heavy metal elements is inhibited, and the heavy metal element absorption amount of the in-season peanuts is decreased; and (2), after the in-season peanuts are harvested and before next-season peanuts are seeded, grass-family green manure crops are planted, and an activating agent is applied to promote absorption and accumulation of green manure on the heavy metal elements. The peanut heavy metal contamination control method is used for solving the problem that the heavy metal element content of peanut seeds is difficult to continuously control through traditional single chemical passivation or single bioremediation. According to the peanut heavy metal contamination control method, through a combined control technology of chemical fixation during peanut planting and phytoremediation after peanut harvesting,the bio-availability and the content of the soil heavy metal elements (cadmium, chromium, lead, copper and zinc) are significantly reduced, and then the heavy metal element content of the peanut seeds is greatly decreased.
Description
technical field [0001] The invention belongs to the technical field of methods for controlling heavy metal pollution of crops, and in particular relates to a method for controlling heavy metal pollution of peanuts. Background technique [0002] Cadmium, chromium, lead, copper, zinc and other heavy metal elements are very dangerous substances in the environment. Long-term intake of food contaminated by heavy metal elements will increase the chance of a series of serious diseases. Therefore, the global production and trade of agricultural products attaches great importance to the content of heavy metal elements. Peanut is an underground fruiting crop. In addition to the roots absorbing heavy metals such as cadmium, chromium, lead, copper, and zinc, the pods can also directly absorb a certain amount of heavy metals. Even if the content of heavy metals in the soil does not exceed the standard, due to the easy enrichment of peanut kernels, the content of heavy metals is often hi...
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IPC IPC(8): B09C1/08B09C1/00
CPCB09C1/08B09C1/105B09C2101/00
Inventor 沈浦王春晓孙学武吴正锋郑永美于天一郑亚萍冯昊石程仁孙秀山王才斌
Owner SHANDONG PEANUT RES INST